Procedure and mobility management entity 3GPP LTE to prohibit access to EU GSM SIM technology application for access to a network

A method for maintaining continuity of service user, comprising: when a user equipment, UE, need to make a transfer network to a radio access network evolved terrestrial Universal Mobile Telecommunications System, eUTRAN, receiving (302), by a management entity mobility, MME, target a request message relocation forwarding that carries information on the type of user from a support node GPRS (general packet radio), SGSN, source service ; determining (303), through the destination MME, according to information received user type, if the UE uses a technology subscriber identity module, SIM, for radio access; prohibit (304, 305) the UE to access the eUTRAN before the network handover is completed if the UE uses technology to access SIM.